Kharazmi University International Journal of Supply and Operations Management 23831359 3 2 2016 08 01 A Fuzzy Goal Programming Approach for Optimizing Non-normal Fuzzy Multiple Response Problems 1332 1350 2696 10.22034/2016.2.07 EN Hamed Mogouie Department of Industrial and Systems Engineering, Isfahan University of Technology, Isfahan, Iran Amir Farshbaf-Geranmayeh School of Industrial Engineering, College of Engineering, University of Tehran, Tehran, Iran Amirhossein Amiri Industrial Engineering Department, Faculty of Engineering, Shahed University, Tehran, Iran Mahdi Bashiri Industrial Engineering Department, Faculty of Engineering, Shahed University, Tehran, Iran Journal Article 2016 06 22 In most manufacturing processes, each product may contain a variety of quality characteristics which are of the interest to be optimized simultaneously through determination of the optimum setting of controllable factors. Although, classic experimental design presents some solutions for this regard, in a fuzzy environment, and in cases where the response data follow non-normal distributions, the available methods do not apply any more. In this paper, a general framework is introduced in which NORTA inverse transformation technique and fuzzy goal programming are used to deal with non-normality distribution of the response data and the fuzziness of response targets respectively. Moreover, the presented framework uses a simulation approach to investigate the effectiveness of the determined setting of controllable factors obtained from statistical analysis, for optimization of sink mark index, deflection rate and volumetric shrinkage in plastic molding manufacturing processes. The accuracy of the proposed method is verified through a real case study. Non-normal multi- response optimization NORTA Inverse Transformation Technique Fuzzy goal programming Injection molding simulation http://www.ijsom.com/article_2696_6392a4647c461aa03dd59e4e18b2aa1b.pdf